update 139 java

yennanliu · Mar 7, 2024 · 0511855 · 0511855
1 parent f04b574
commit 0511855
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Showing 3 changed files with 41 additions and 11 deletions.
diff --git a/data/progress.txt b/data/progress.txt
@@ -1,4 +1,4 @@
-20240307: 139
+20240307: 139(again)
 20240306: 121,124(again),125,128,133(again)
 20240305: 100,102,104,105(again)
 20240304: 73,76,79(again),91,25

diff --git a/data/to_review.txt b/data/to_review.txt
@@ -1,38 +1,38 @@
-2024-05-01 -> ['139']
+2024-05-01 -> ['139(again)']
 2024-04-30 -> ['121,124(again),125,128,133(again)']
 2024-04-29 -> ['100,102,104,105(again)']
 2024-04-28 -> ['73,76,79(again),91,25']
 2024-04-27 -> ['55(again),56,62,70']
 2024-04-24 -> ['39,48(again),49,53,54']
 2024-04-23 -> ['20,21,23,33(again)']
 2024-04-22 -> ['1,3,5,4,19']
-2024-04-10 -> ['139']
+2024-04-10 -> ['139(again)']
 2024-04-09 -> ['121,124(again),125,128,133(again)']
 2024-04-08 -> ['100,102,104,105(again)']
 2024-04-07 -> ['73,76,79(again),91,25']
 2024-04-06 -> ['55(again),56,62,70']
 2024-04-03 -> ['39,48(again),49,53,54']
 2024-04-02 -> ['20,21,23,33(again)']
 2024-04-01 -> ['1,3,5,4,19']
-2024-03-28 -> ['139']
+2024-03-28 -> ['139(again)']
 2024-03-27 -> ['121,124(again),125,128,133(again)']
 2024-03-26 -> ['100,102,104,105(again)']
 2024-03-25 -> ['73,76,79(again),91,25']
 2024-03-24 -> ['55(again),56,62,70']
 2024-03-21 -> ['39,48(again),49,53,54']
-2024-03-20 -> ['139', '20,21,23,33(again)']
+2024-03-20 -> ['139(again)', '20,21,23,33(again)']
 2024-03-19 -> ['121,124(again),125,128,133(again)', '1,3,5,4,19']
 2024-03-18 -> ['100,102,104,105(again)']
 2024-03-17 -> ['73,76,79(again),91,25']
 2024-03-16 -> ['55(again),56,62,70']
-2024-03-15 -> ['139']
+2024-03-15 -> ['139(again)']
 2024-03-14 -> ['121,124(again),125,128,133(again)']
 2024-03-13 -> ['100,102,104,105(again)', '39,48(again),49,53,54']
-2024-03-12 -> ['139', '73,76,79(again),91,25', '20,21,23,33(again)']
+2024-03-12 -> ['139(again)', '73,76,79(again),91,25', '20,21,23,33(again)']
 2024-03-11 -> ['121,124(again),125,128,133(again)', '55(again),56,62,70', '1,3,5,4,19']
-2024-03-10 -> ['139', '100,102,104,105(again)']
-2024-03-09 -> ['139', '121,124(again),125,128,133(again)', '73,76,79(again),91,25']
-2024-03-08 -> ['139', '121,124(again),125,128,133(again)', '100,102,104,105(again)', '55(again),56,62,70', '39,48(again),49,53,54']
+2024-03-10 -> ['139(again)', '100,102,104,105(again)']
+2024-03-09 -> ['139(again)', '121,124(again),125,128,133(again)', '73,76,79(again),91,25']
+2024-03-08 -> ['139(again)', '121,124(again),125,128,133(again)', '100,102,104,105(again)', '55(again),56,62,70', '39,48(again),49,53,54']
 2024-03-07 -> ['121,124(again),125,128,133(again)', '100,102,104,105(again)', '73,76,79(again),91,25', '20,21,23,33(again)']
 2024-03-06 -> ['100,102,104,105(again)', '73,76,79(again),91,25', '55(again),56,62,70', '1,3,5,4,19']
 2024-03-05 -> ['73,76,79(again),91,25', '55(again),56,62,70', '39,48(again),49,53,54']

diff --git a/leetcode_java/src/main/java/LeetCodeJava/BackTrack/WordBreak.java b/leetcode_java/src/main/java/LeetCodeJava/BackTrack/WordBreak.java
@@ -33,7 +33,37 @@ public class WordBreak {
 //    }
 
     // V0
-    // IDEA : BACKTRACK (modify above via GPT)
+    // IDEA : BFS
+    // https://github.com/yennanliu/CS_basics/blob/master/leetcode_python/Backtracking/word-break.py
+    public boolean wordBreak(String s, List<String> wordDict) {
+        if (s == null || s.length() == 0 || wordDict == null || wordDict.size() == 0) {
+            return false;
+        }
+
+        Deque<Integer> q = new ArrayDeque<>();
+        q.offer(0);
+        boolean[] visited = new boolean[s.length()];
+
+        while (!q.isEmpty()) {
+            int i = q.poll();
+            if (!visited[i]) {
+                for (int j = i + 1; j <= s.length(); j++) {
+                    if (wordDict.contains(s.substring(i, j))) {
+                        if (j == s.length()) {
+                            return true;
+                        }
+                        q.offer(j);
+                    }
+                }
+                visited[i] = true;
+            }
+        }
+
+        return false;
+    }
+
+    // V0
+    // IDEA : BACKTRACK (modified via GPT)
     public boolean wordBreak_(String s, List<String> wordDict) {
         return check(s, new HashSet<>(wordDict), 0, new Boolean[s.length()]);
     }